SPR™EX Spiral Wound Lining
6″ – 42″ Pipe Lining
No Grout Solution
100% Trenchless
SPR™EX PVC Liner
6" - 42" Pipe Lining
No Grout Solution
100% Trenchless
Expand for a Tight Fit Liner
SPR™EX is a trenchless lining method for small diameter sewers, storm drains and culverts. SPR™EX is a tight fit liner and does not require annular space grouting. SPR™EX is a structural lining solution that can be designed for fully deteriorated pipes capable of withstanding all applied loads. The PVC profile is wound directly into the host pipe. The hydraulic winding machine is lowered into the access chamber.
The process begins by feeding a PVC strip into the winding machine. The pipe liner is constructed and pushed towards the upstream manhole. Once the liner reaches the termination manhole or structure, the liner is restrained, then expanded creating a tight fit liner.
SPR™EX Trenchless Lining Process
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SPR™EX Lining Process
Expand for a Tight-Fit Liner
SPR™EX is initially wound at a fixed diameter smaller than the host pipe, resulting in a gap between the pipe liner and host pipe.
Once the SPR™EX reaches the far end manhole (typically the upstream manhole), the profile’s expansion process begins. A wire within the liner is pulled, severing the secondary, or sacrificial lock. As a result of the lock being cut, successive wraps of profile expand against eachother, increasing the diameter for a tight fit against the pipeline wall.
As the wire is pulled, the process travels back towards the winding machine. Once the liner is expanded and the ends are sealed, the pipe rehabilitation process is complete.
Sewer Pipe Lining
Storm Drain Lining
Culvert Lining
SPR™EX Lining Process
SPR™EX is a tight fit lining solution that does not require annular space grouting. SPR™EX is initially wound at a fixed diameter smaller than the host pipe. This is done so that the liner can negotiate offsets and other host pipe defects without restriction. SPR™EX liners are typically installed from the downstream to the upstream manhole however reverse set-ups are possible.
Once the SPR™EX liner reaches the upstream manhole, the liner is torsionally restrained. Once secured, the operator will then expand the liner. The expansion process begins when the wire positioned between the primary and secondary (or sacrificial lock) is retracted, severing the secondary lock. This allows for successive wraps of PVC profile to expand, creating a customized tight fit liner against the inside of the host pipe.
As the wire is pulled, the liner continues to expand. The operator will continue to feed additional profile into the host pipe until the entire pipe segment is lined. Once the liner is expanded, the ends are sealed then the operator can immediately reinstate laterals using industry standard robotic equipment.
Trenchless Lining Methods
3 Spiral Wound installation methods based upon pipe diameter
SPR™EX is a tight-fit liner suitable for small-diameter sewers, storm drains, and culverts. It does not require annular space grouting.
The PVC profile is wound directly into the host pipe by the hydraulic winding machine in the access chamber.
SPR™TF/RO is a trenchless pipeline rehabilitation method for mid-range diameter sewers, storm drains, and culverts that does not require annular space grouting.
This method uses two different winding machines that traverse the pipeline while constructing a tight-fit liner.
SPR™ is used to repair large round and non-round sewers, storm drains, and culverts.
The PVC profile is wound into the pipe by a traverse winding machine, and then grout fills the annular space.
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